People shed pants for 'No Pants Subway Ride'

Updated 7:20 AM ET, Mon January 13, 2014

People shed pants for 'No Pants Subway Ride'18 photos

People shed pants for 'No Pants Subway Ride' – Participants in the 13th "No Pants Subway Ride" travel on an Underground train in London on Sunday, January 12. The annual event first started in New York City in 2002, when one pantsless participant boarded a subway at each of seven consecutive stops, claiming to have forgotten his pants. Since then, cities all over the world have seen bare-legged patrons on subways.

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People shed pants for 'No Pants Subway Ride'18 photos

People shed pants for 'No Pants Subway Ride' – A man enters the New York subway in his underwear.

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People shed pants for 'No Pants Subway Ride'18 photos

People shed pants for 'No Pants Subway Ride' – People with and without pants walk up a staircase at a subway station in New York.

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People shed pants for 'No Pants Subway Ride'18 photos

People shed pants for 'No Pants Subway Ride' – People ride the U2 subway line in Berlin.

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People shed pants for 'No Pants Subway Ride'18 photos

People shed pants for 'No Pants Subway Ride' – A woman stands between two pantsless passengers in Madrid.

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People shed pants for 'No Pants Subway Ride'18 photos

People shed pants for 'No Pants Subway Ride' – A fully clothed woman talks to women in their underwear at a subway station in Sofia, Bulgaria.

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People shed pants for 'No Pants Subway Ride'18 photos

People shed pants for 'No Pants Subway Ride' – A man reads a newspaper in his underwear while riding a Metro train in Washington.

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People shed pants for 'No Pants Subway Ride'18 photos

People shed pants for 'No Pants Subway Ride' – People wait at a Metro station in Mexico City.

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People shed pants for 'No Pants Subway Ride'18 photos

People shed pants for 'No Pants Subway Ride' – Participants travel without their pants in Madrid.

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People shed pants for 'No Pants Subway Ride'18 photos

People shed pants for 'No Pants Subway Ride' – People stand on the platform at the Potsdamer Platz station in Berlin.